stringify-replacer-array-trailing-holes.js

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// Any copyright is dedicated to the Public Domain.

// http://creativecommons.org/licenses/publicdomain/

var gTestfile = "stringify-replacer-array-trailing-holes.js";

//-----------------------------------------------------------------------------

var BUGNUMBER = 1217069;

var summary =

  "Better/more correct handling for replacer arrays with trailing holes " +

  "through which inherited elements might appear";

print(BUGNUMBER + ": " + summary);

/**************

 * BEGIN TEST *

 **************/

var obj = { 0: "hi", 1: "n-nao", 2: "run away!", 3: "bye" };

var s;

var replacer = [0, /* 1 */, /* 2 */, /* 3 */, ];

assertEq(JSON.stringify(obj, replacer),

         '{"0":"hi"}');

var nobj = new Number(0);

nobj.toString = () => { replacer[1] = 1; return 0; };

replacer[0] = nobj;

assertEq(JSON.stringify(obj, replacer),

         '{"0":"hi","1":"n-nao"}');

delete replacer[1];

replacer[0] = 0;

Object.prototype[0] = 0;

Object.prototype[1] = 1;

Object.prototype[2] = 2;

Object.prototype[3] = 3;

assertEq(JSON.stringify(obj, replacer),

         '{"0":"hi","1":"n-nao","2":"run away!","3":"bye"}');

/******************************************************************************/

if (typeof reportCompare === "function")

  reportCompare(true, true);

print("Tests complete");